Soaking tub



FIG. 1 is a front perspective view of a soaking tub showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines in the Figures showing the clawfeet and drain are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a soaking tub, as shown and described. 